Anemia, Sickle CellBenzoatesDeferasirox
Dr. Liesl Mathias, MD
NPI1164514113
- Publications
- 2
- Industry payments
- $1,092
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 1
- Practice address
- 9965 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Mathias' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Liesl Mathias is a pediatrician in Fontana, California
Dr. Mathias practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Mathias' NPI, 1164514113, was assigned on September 28, 2006. Dr. Mathias graduated from St. John's Medical College in 1990. Dr. Mathias holds California license A56022.
NPI and contact details
- NPI
- 1164514113NPI Registry (opens in a new tab)
- NPI enumeration date
- September 28, 2006
- NPI status
- Active
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Liesl Mathias practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Mathias' primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Liesl Mathias is affiliated with 2 sites of care and 1 medical group
Dr. Mathias' primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Mathias to 1 more group practice or clinic, named with a free account.
Kaiser Permanente - Fontana Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Liesl Mathias' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mathias practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Liesl Mathias is one of 8,236 pediatricians in California
Pediatrics is Dr. Mathias' primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Mathias is board certified in pediatric hematology-oncology by the American Board of Pediatrics. Dmand AI has Dr. Mathias' licenses on file in 3 states: California, District of Columbia and Virginia.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
- District of Columbia license
- Virginia license
Pediatricians near Dr. Mathias
Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Liesl Mathias' patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Mathias' median patient age at 10, with 45% women.
Dr. Mathias' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. Liesl Mathias has 2 publications on record
Dmand AI links 2 papers to Dr. Mathias in 2011. Dr. Mathias' most frequent co-authors are Thomas D. Coates, MD, Lisa Robin Diller, MD and Jeffrey S. Dome, MD.
Papers2
Dr. Mathias' most frequent co-authors
- Thomas D. Coates, MD1 shared paper
- Lisa Robin Diller, MD1 shared paper
- Jeffrey S. Dome, MD1 shared paper
Recent publications by Dr. Mathias
Pediatr Blood Cancer
Antineoplastic Combined Chemotherapy ProtocolsBrain NeoplasmsKidney Neoplasms
See who Dr. Mathias researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mathias works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Liesl Mathias received $1,092 in industry payments from 2016 to 2025
CMS Open Payments shows 13 general payments to Dr. Mathias from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $857.
General payments to Dr. Mathias by program year, 2016 to 2025
Companies that paid Dr. Mathias the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Liesl Mathias graduated from St. John's Medical College
Dr. Mathias graduated from St. John's Medical College in 1990.
- Medical school
- Board certified in pediatric hematology-oncology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Liesl Mathias accepts plans from 1 insurance carrier
Dr. Mathias is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Mathias accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Liesl Mathias's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Liesl Mathias
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Liesl Mathias' NPI number?
Dr. Liesl Mathias' NPI number is 1164514113. It was assigned on September 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Liesl Mathias?
Dr. Liesl Mathias is a pediatrician in Fontana, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Liesl Mathias practice?
Dr. Mathias practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Mathias' primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Mathias to 1 group practice or clinic.
What is Dr. Liesl Mathias' office phone number?
The practice phone on file for Dr. Mathias is (909) 427-5000.
What is Dr. Liesl Mathias' medical license number?
Dr. Mathias holds California license A56022, one of the licenses on file in 3 states.
Which states has Dr. Liesl Mathias been licensed in?
Dmand AI has state licenses on file for Dr. Mathias in California (1996 to 2027), District of Columbia (2000 to 2002) and Virginia (2000 to 2002).
What medical group is Dr. Liesl Mathias part of?
Dr. Mathias is linked to Southern California Permanente Medical Group.
Is Dr. Liesl Mathias board certified?
Yes. Dr. Mathias is board certified in pediatric hematology-oncology by the American Board of Pediatrics.
Where did Dr. Liesl Mathias go to medical school?
Dr. Mathias graduated from St. John's Medical College in 1990.
Has Dr. Liesl Mathias received payments from drug or device companies?
CMS Open Payments shows $1,092 in general payments to Dr. Mathias from 5 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
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How long has Dr. Liesl Mathias been practicing?
Dr. Mathias graduated from medical school in 1990, 36 years ago.
Does Dr. Liesl Mathias do research?
Dmand AI links 2 publications to Dr. Mathias.
Who does Dr. Liesl Mathias publish with?
Dr. Mathias' most frequent co-authors are Thomas D. Coates, MD (1 shared paper), Lisa Robin Diller, MD (1 shared paper) and Jeffrey S. Dome, MD (1 shared paper).
What insurance does Dr. Liesl Mathias accept?
Dr. Mathias is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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